IFB 24-33-SD - 04 Att C - Technical Specifications

INVITATION TO BID # 24-33-SD FOR SPOTSYLVANIA COUNTY, VIRGINIA DEPARTMENT OF UTILITIES ROUTE 1 SEWER REPLACEMENT SEPTEMBER 2023 Prepared By: 4840 Cox Road Glen Allen, Virginia 23060 804-515-8300 IFB #24-33-SD Table of Contents Route 1 Sewer Replacement TOC-1 ATTACHMENT X TECHNICAL SPECIFICATIONS ROUTE 1 SEWER REPLACEMENT TABLE OF CONTENTS (TOC) DIVISION 01 - GENERAL REQUIREMENTS 01 29 01 MEASUREMENT AND PAYMENT 01 32 33 CONSTRUCTION PHOTOGRAPHS 01 35 43 PROTECTION OF ENVIRONMENT 01 66 10 DELIVERY, STORAGE AND HANDLING 01 74 23 CLEANING UP DIVISION 02 - EXISTING CONDITIONS 02 41 00 DEMOLITION DIVISION 03 - CONCRETE 03 30 00 CAST-IN-PLACE CONCRETE DIVISION 31 - EARTHWORK 31 10 00 SITE CLEARING 31 20 00 EARTH MOVING 31 23 19 DEWATERING 31 23 33 TRENCHING BACKFILLING AND COMPACTION 31 50 00 EXCAVATION SUPPORT SYSTEMS DIVISION 33 – UTILITIES 33 01 48 FLOW CONTROL OF SEWER LINES 33 24 42 GUIDED BORING 33 30 00 SANITARY SEWERAGE UTILITIES END OF TABLE OF CONTENTS IFB #24-33-SD Measurement

and Payment Route 1 Sewer Replacement Section No. 01 29 01-1 SECTION 01 29 01 MEASUREMENT AND PAYMENT PART 1 - GENERAL 1.01 GENERAL A. The Contractor shall receive and accept the compensation provided in the Bid and the Contract as full payment for furnishing all labor, materials, tools, equipment and services for performing all operations necessary to complete the Work under the Contract, and also in full payment for all loss or damages arising from the nature of the Work, or from any discrepancy between the actual quantities of Work and the quantities herein estimated by the Engineer, or from action of the elements or from any unforeseen difficulties which may be encountered during the prosecution of the Work until the final acceptance by the Owner. B. The lump sum price stated in the Bid includes all costs and expenses for taxes, labor, equipment, materials, commissions, transportation, patent fees and royalties, labor for handling materials during inspection, together with any and all other costs and expenses for performing and completing the Work as shown on the Contract Drawings and as spec- ified herein. The basis of progress payments of said lump shall be broken down and de- tailed in the Schedule of Values in accordance with the description of the representative items in this section. C. The Contractor’s attention is called to the fact that the quotations for the various items of the work are intended to establish a total price for completing the Work in its entirety. Should the Contractor feel that the cost for any item of work has not been defined by a Bid Form, he must bring this to the attention of the Owner during the bid question period. If the Owner finds the request to be valid, it may be added to the bid form. If the request is found to be incidental to the project, the contractor shall include the cost for that work in some other applicable bid item, so that his proposal for the work reflects his total price for completing the work in its entirely. D. Items listed as “CONTINGENT ITEM” in the Bid Form are to be used and will be paid for only at the written direction and authorization of the Owner. Payment under this section will be made for materials furnished and placed in addition to those shown or beyond the limits indicated or reasonably inferred by the Contract Documents. Measure- ment and payment will be in accordance with the Schedule of Values and will include, but not necessarily be limited to, furnishing, hauling, placing and installing of materials and the furnishing of such manpower and equipment as required to accomplish the Work as directed in writing by the Owner. E. Changes and Modifications in the Work by the Owner IFB #24-33-SD Measurement and Payment Route 1 Sewer Replacement Section No. 01 29 01-2 1. The Owner reserves the right to change the alignment, grade, form, length, dimen- sions, or material of the Work under the Contract, whenever conditions or obstruc- tions are met that render the changes desirable or necessary. All such alterations shall be paid for under the total lump sum bid or at a unit price bid for these items of Work, except as follows: a. In the cases where such alterations reduce the total Contract amount, a Change Order shall be executed to reduce the total Contract amount, and the Contractor shall have no claim on this account for damages or for anticipated profits on the Work that may be dispensed with. b. In the cases where such alterations increase the total Contract amount, a Change Order shall be executed to increase the total Contract amount. c. Any additions or subtractions to the contract prices shall be proposed by the Contractor and then reviewed and approved by the Owner. d. In case the quantity of work in individual unit price items of work increases or decreases greater than 20 percent of the bid quantity, unit prices may be renegotiated. F. Owner May Increase or Decrease Quantities 1. The Owner reserves the right to increase or decrease the quantity of material to be furnished or work to be done under the Contract whenever he deems it advisable or necessary. Such increase or decrease shall in no way violate or invalidate the Con- tract. 2. For the unit price items included in the bid, the Contractor will be paid for the actual amount of the authorized work done or material furnished under each item of the proposal, at the unit price bid for that item. In case the quantity of any item is increased, the Contractor shall not be entitled to compensation over and above the unit bid for each item. In case the quantity is decreased, the Contractor shall have no claim for damages on account of loss of anticipated profits because of such de- crease. 3. For the contingency items, the Contractor shall be paid for actual quantities in- stalled or services provided, on written order of the Engineer. 1.02 MEASUREMENT A. The quantities for payment under this Contract shall be determined by actual measurement of the completed items, in place and accepted by the Owner, in accordance with Section D - General Conditions. A representative of the Contractor shall witness all field measurements. IFB #24-33-SD Measurement and Payment Route 1 Sewer Replacement Section No. 01 29 01-3 1.03 PAYMENT A. Please see Section D – General Terms and Conditions, Article 10 - Payments and Com- pletion. 1.04 BID ITEMS A. Item 1: Mobilization 1. Payment for mobilization shall be made at the lump sum provided in the Schedule of Values for mobilization, upon completion. 2. No measurement shall be made for this item. 3. Lump sum cost for mobilization shall include such items as bonds, insurance, stake- out, equipment and labor mobilization, field office, progress photographs, project sign, permits, shop drawings, Contractor’s test pits, and other incidental items, in- cluding the safe relocation and protection of personal property located within the easement required prior to commencement of construction. Mobilization shall not exceed 5.0 percent of the total price bid. Application for maximum 50 percent pay- ment of mobilization may be made on the first Request for Payment, maximum 40 percent payment on the second Request for Payment, and 10 percent on the final Request for Payment. B. Item 2: Traffic Control 1. Payment for furnishing, installing, operating, maintaining, and removing all tem- porary traffic control measures shall be made based on the lump sum price provided in the Schedule of Values. 2. No measurement shall be made for this item. Payment shall not be made until the traffic control measures are in place. 3. The lump sum price shall include all labor, materials, tools, equipment, and services for furnishing, installing, operating, maintaining, and removal of the traffic control measures including all signage, barrels, barricades, and other incidental items re- quired for its proper operation. C. Super Silt Fence: 1. Payment for furnishing, installing, maintaining and removing super silt fence shall be made at the linear feet unit price bid provided in the Schedule of Values, as directed by the Owner, actually installed, complete in place and removed. 2. Measurement for payment for super silt fence shall be the actual linear feet of silt fence installed per VESCH Plate 3.05-1. The actual length of fence installed will be paid at 90 percent (90%) of the unit price provided; the remainder 10 percent IFB #24-33-SD Measurement and Payment Route 1 Sewer Replacement Section No. 01 29 01-4 (10%) of the unit price will be paid upon final E&S inspection, removal and proper disposal of the fence. The cost of reinstallation of damaged silt fence is incidental. 3. The unit price provided per linear foot of super silt fence shall include installation, maintenance, and removal of super silt fence, including all labor, materials, equip- ment, and other incidentals necessary to complete the item, as shown on the Draw- ings or as required by the Owner. D. Check Dam: 1. Payment for furnishing and installing rock check dam entrance shall consist of fur- nishing, installing, maintaining, rock check dams. 2. No measurement shall be made for this item. 3. The unit price for Check Dam shall include all labor, materials, tools, equipment and services for furnishing, installing, and maintaining Check Dams as specified on the plans. E. Stream Crossing: 1. Payment for Utility Stream Crossing(s) and Temporary Vehicle Stream Crossing(s) meeting County standards shall be made at the respective unit price provided in the Schedule of Values for each type of the stream crossings maintained, complete in place, and removed upon the completion of work. 2. No measurement shall be made for this item. 3. The unit price provided for stream crossings shall include all labor, materials, tools, equipment, and services for furnishing, installing and removing the crossings in- cluding, but not limited to, maintenance and other incidental items required for proper operation of each stream crossing, actually placed and removed. F. Construction Entrance: 1. Payment for construction entrances meeting County standards shall be made at the unit price provided in the Schedule of Values for each of the construction entrances, complete in place. 2. No measurement shall be made for this item. 3. The unit price provided for construction entrances shall include all labor, materials, tools, equipment, and services for furnishing and installing the construction en- trances including, but not limited to, maintenance and other incidental items re- quired for proper operation of the construction entrance, including removal upon completion of the project. G. Clearing and Grubbing: IFB #24-33-SD Measurement and Payment Route 1 Sewer Replacement Section No. 01 29 01-5 1. Payment for clearing and grubbing shall be made at the unit price provided per square yard of clearing and grubbing within the easement or limits of construction, complete in place. 2. Measurement for square yards of clearing and grubbing shall be made in the field. 3. The unit price shall include all labor, materials, equipment and services for the re- moval of trees, stumps, shrubs undergrowth and debris including removal and dis- posal of all items required to install the pipeline as shown on the plans and within the easement or limits of construction that is not to be protected and including other incidental items necessary to complete this element of the Work. This item will be used for areas identified that contain dense vegetation and many trees of a large diameter. H. 42-inch PS-115 PVC Sanitary Sewer: 1. Payment for furnishing and installing sanitary sewer pipe of the various sizes, ma- terials, and pressure rating called for on the Construction Drawing meeting County standards shall be made at the unit price provided in the Schedule of Values per linear foot measured in the horizontal (not slope) actually installed, complete in place. 2. Measurement of length will be made for these items in the field with a representa- tive of the Owner present. No deductions will be made in the measured length in the manholes. 3. The unit price provided per linear foot shall include all labor, materials, tools, equipment and services for connection to the existing sanitary sewer system includ- ing, but not limited to; traffic control, excavation, pavement removal, excavation including rock if required, dewatering, sheeting and shoring, tracer wire, testing, appurtenance at depth indicated, cleanup, removal and disposal of all unsuitable and excess material, replacement of grass, sod, shrubs, backfill and surface materi- als, including the replacement of gravel, asphalt, and concrete driveways, and other incidental items required for the proper operation of the sanitary sewer. I. 36-inch PS-115 PVC Sanitary Sewer: 1. Payment for furnishing and installing sanitary sewer pipe of the various sizes, ma- terials, and pressure rating called for on the Construction Drawing meeting County standards shall be made at the unit price provided in the Schedule of Values per linear foot measured in the horizontal (not slope) actually installed, complete in place. 2. Measurement of length will be made for these items in the field with a representa- tive of the Owner present. No deductions will be made in the measured length in the manholes. IFB #24-33-SD Measurement and Payment Route 1 Sewer Replacement Section No. 01 29 01-6 3. The unit price provided per linear foot shall include all labor, materials, tools, equipment and services for connection to the existing sanitary sewer system includ- ing, but not limited to; traffic control, excavation, pavement removal, excavation including rock if required, dewatering, sheeting and shoring, tracer wire, testing, appurtenance at depth indicated, cleanup, removal and disposal of all unsuitable and excess material, replacement of grass, sod, shrubs, backfill and surface materi- als, including the replacement of gravel, asphalt, and concrete driveways, and other incidental items required for the proper operation of the sanitary sewer. J. 36-inch CL 52 DIP Sanitary Sewer: 1. Payment for furnishing and installing sanitary sewer pipe of the various sizes, ma- terials, and pressure rating called for on the Construction Drawing meeting County standards shall be made at the unit price provided in the Schedule of Values per linear foot measured in the horizontal (not slope) actually installed, complete in place. 2. Measurement of length will be made for these items in the field with a representa- tive of the Owner present. No deductions will be made in the measured length in the manholes. 3. The unit price provided per linear foot shall include all labor, materials, tools, equipment and services for connection to the existing sanitary sewer system includ- ing, but not limited to; traffic control, excavation, pavement removal, excavation including rock if required, dewatering, sheeting and shoring, tracer wire, testing, appurtenance at depth indicated, cleanup, removal and disposal of all unsuitable and excess material, replacement of grass, sod, shrubs, backfill and surface materi- als, including the replacement of gravel, asphalt, and concrete driveways, and other incidental items required for the proper operation of the sanitary sewer. K. 18-inch PS-115 PVC Sanitary Sewer: 1. Payment for furnishing and installing sanitary sewer pipe of the various sizes, ma- terials, and pressure rating called for on the Construction Drawing meeting County standards shall be made at the unit price provided in the Schedule of Values per linear foot measured in the horizontal (not slope) actually installed, complete in place. 2. Measurement of length will be made for these items in the field with a representa- tive of the Owner present. No deductions will be made in the measured length in the manholes. 3. The unit price provided per linear foot shall include all labor, materials, tools, equipment and services for connection to the existing sanitary sewer system includ- ing, but not limited to; traffic control, excavation, pavement removal, excavation including rock if required, dewatering, sheeting and shoring, tracer wire, testing, appurtenance at depth indicated, cleanup, removal and disposal of all unsuitable IFB #24-33-SD Measurement and Payment Route 1 Sewer Replacement Section No. 01 29 01-7 and excess material, replacement of grass, sod, shrubs, backfill and surface materi- als, including the replacement of gravel, asphalt, and concrete driveways, and other incidental items required for the proper operation of the sanitary sewer. L. 12-inch SDR-35 PVC Sanitary Sewer: 1. Payment for furnishing and installing sanitary sewer pipe of the various sizes, ma- terials, and pressure rating called for on the Construction Drawing meeting County standards shall be made at the unit price provided in the Schedule of Values per linear foot measured in the horizontal (not slope) actually installed, complete in place. 2. Measurement of length will be made for these items in the field with a representa- tive of the Owner present. No deductions will be made in the measured length in the manholes. 3. The unit price provided per linear foot shall include all labor, materials, tools, equipment and services for connection to the existing sanitary sewer system includ- ing, but not limited to; traffic control, excavation, pavement removal, excavation including rock if required, dewatering, sheeting and shoring, tracer wire, testing, appurtenance at depth indicated, cleanup, removal and disposal of all unsuitable and excess material, replacement of grass, sod, shrubs, backfill and surface materi- als, including the replacement of gravel, asphalt, and concrete driveways, and other incidental items required for the proper operation of the sanitary sewer. M. 8-inch SDR-35 PVC Sanitary Sewer: 1. Payment for furnishing and installing sanitary sewer pipe of the various sizes, ma- terials, and pressure rating called for on the Construction Drawing meeting County standards shall be made at the unit price provided in the Schedule of Values per linear foot measured in the horizontal (not slope) actually installed, complete in place. 2. Measurement of length will be made for these items in the field with a representa- tive of the Owner present. No deductions will be made in the measured length in the manholes. 3. The unit price provided per linear foot shall include all labor, materials, tools, equipment and services for connection to the existing sanitary sewer system includ- ing, but not limited to; traffic control, excavation, pavement removal, excavation including rock if required, dewatering, sheeting and shoring, tracer wire, testing, appurtenance at depth indicated, cleanup, removal and disposal of all unsuitable and excess material, replacement of grass, sod, shrubs, backfill and surface materi- als, including the replacement of gravel, asphalt, and concrete driveways, and other incidental items required for the proper operation of the sanitary sewer. N. 6-inch SDR-26 PVC Sewer Lateral: IFB #24-33-SD Measurement and Payment Route 1 Sewer Replacement Section No. 01 29 01-8 1. Payment for furnishing and installing sanitary sewer pipe of the various sizes, ma- terials, and pressure rating called for on the Construction Drawing meeting County standards shall be made at the unit price provided in the Schedule of Values per linear foot measured in the horizontal (not slope) actually installed, complete in place. 2. Measurement of length will be made for these items in the field with a representa- tive of the Owner present. No deductions will be made in the measured length in the manholes. 3. The unit price provided per linear foot shall include all labor, materials, tools, equipment and services for connection to the existing sanitary sewer system includ- ing, but not limited to; traffic control, excavation, pavement removal, excavation including rock if required, dewatering, sheeting and shoring, tracer wire, testing, cleanouts, connection to trunk sewer and appurtenance at depth indicated, cleanup, removal and disposal of all unsuitable and excess material, replacement of grass, sod, shrubs, backfill and surface materials, including the replacement of gravel, as- phalt, and concrete driveways, and other incidental items required for the proper operation of the sanitary sewer. O. 8-foot Diameter Manhole: 1. Payment for pre-cast concrete sanitary sewer manholes of the specified diameter and depth with watertight frame and cover (or standard frame and cover where specified), with inside drop where specified and with manhole vent where specified shall be made at the unit price provided per vertical foot, actually installed, com- plete in place. 2. Measurement of length will be made for these items in the field with a representa- tive of the Owner present. The pay depth shall be the vertical depth from the top of the manhole top to the lowest invert plus 8 inches. 3. The unit price provided per each manhole shall include all labor, materials, tools, equipment and services for furnishing and installing the specified 8 foot-0 inches diameter pre-cast concrete manholes of the specified depth including, but not lim- ited to; traffic control, unclassified excavation and pavement removal, excavation including rock if required, trench support, dewatering, handling and placing of manhole sections, watertight bolt-down frames and covers (where specified), inter- nal drop connections (where specified), manhole air vent (where specified), outside coating, flexible pipe connections, connections to existing pipes, transition cou- plings, and appurtenances, temporary blocking, stone bedding (No. 57 stone per County Utilities Manual Standards), testing, cleanup, removal and disposal of all unsuitable and excess material, backfill and surface materials, including the re- placement of gravel, asphalt, and concrete driveways, and seeding and mulching and all restoration required to restore disturbed areas to a condition equal to or bet- ter than pre-construction conditions, and other incidental items required for the proper operation of the manholes. IFB #24-33-SD Measurement and Payment Route 1 Sewer Replacement Section No. 01 29 01-9 P. 6-foot Diameter Manhole: 1. Payment for pre-cast concrete sanitary sewer manholes of the specified diameter and depth with watertight frame and cover (or standard frame and cover where specified), with inside drop where specified and with manhole vent where specified shall be made at the unit price provided per vertical foot, actually installed, com- plete in place. 2. Measurement of length will be made for these items in the field with a representa- tive of the Owner present. The pay depth shall be the vertical depth from the top of the manhole top to the lowest invert plus 8 inches. 3. The unit price provided per each manhole shall include all labor, materials, tools, equipment and services for furnishing and installing the specified 6 foot-0 inches diameter pre-cast concrete manholes of the specified depth including, but not lim- ited to; traffic control, unclassified excavation and pavement removal, excavation including rock if required, trench support, dewatering, handling and placing of manhole sections, watertight bolt-down frames and covers (where specified), inter- nal drop connections (where specified), manhole air vent (where specified), outside coating, flexible pipe connections, connections to existing pipes, transition cou- plings, and appurtenances, temporary blocking, stone bedding (No. 57 stone per County Utilities Manual Standards), testing, cleanup, removal and disposal of all unsuitable and excess material, backfill and surface materials, including the re- placement of gravel, asphalt, and concrete driveways, and seeding and mulching and all restoration required to restore disturbed areas to a condition equal to or bet- ter than pre-construction conditions, and other incidental items required for the proper operation of the manholes. Q. 6-foot Diameter Cut-in Manhole: 1. Payment for pre-cast concrete sanitary sewer manholes of the specified diameter and depth with watertight frame and cover (or standard frame and cover where specified), with inside drop where specified and with manhole vent where specified shall be made at the unit price provided per vertical foot, actually installed, com- plete in place. 2. Measurement of length will be made for these items in the field with a representa- tive of the Owner present. The pay depth shall be the vertical depth from the top of the manhole top to the lowest invert plus 8 inches. 3. The unit price provided per each manhole shall include all labor, materials, tools, equipment and services for furnishing and installing the specified 6 foot-0 inches diameter pre-cast concrete manholes of the specified depth including, but not lim- ited to; traffic control, unclassified excavation and pavement removal, excavation including rock if required, trench support, dewatering, handling and placing of manhole sections, watertight bolt-down frames and covers (where specified), inter- nal drop connections (where specified), manhole air vent (where specified), outside IFB #24-33-SD Measurement and Payment Route 1 Sewer Replacement Section No. 01 29 01-10 coating, flexible pipe connections, connections to existing pipes, transition cou- plings, and appurtenances, temporary blocking, stone bedding (No. 57 stone per County Utilities Manual Standards), testing, cleanup, removal and disposal of all unsuitable and excess material, backfill and surface materials, including the re- placement of gravel, asphalt, and concrete driveways, and seeding and mulching and all restoration required to restore disturbed areas to a condition equal to or bet- ter than pre-construction conditions, and other incidental items required for the proper operation of the manholes. R. Clay Dam: 1. Payment for furnishing and installing of Clay Dams shall be made at the unit price provided in the Schedule of Values for each Dam installed. 2. No measurement will be made for this item. 3. The unit price for Clay Dam shall include all labor, materials, tools, equipment and services for furnishing and installing Clay Dams as specified on the plans. This is included, but not limited to; all materials, including stone, concrete grout, suitable material and filter fabric, all site preparation for the installation of clay dams. S. Pipe Concrete Encasement: 1. Payment for concrete shall be made at the unit price provided in the Schedule of Values per linear foot of concrete encasement measured horizontal (not slope) ac- tually installed, complete in place. 2. Measurement of lengths will be made horizontally, along the centerline of the pipe- line and will account for pipe diameter with a minimum thickness of 8 inches. 3. The unit price for concrete shall include all labor, materials, tools, equipment and services for furnishing and placing cast in place concrete. This is including, but not limited to furnishing, excavating, testing, installing and removing as applicable all forms, form ties, reinforcing steel and mesh, control joints and expansions joints, inserts, waterstops, anchors, sleeves, bolts, plates and all other miscellaneous items associated with and required to complete the work. T. 56-inch Diameter (minimum) Steel Casing: 1. Payment for casing shall be made at the unit price provided in the Schedule of Val- ues per linear foot for lengths of steel casing actually installed, as directed by the engineer, complete in place. 2. Measurements of lengths will be made horizontally, along the centerline of the steel casing. 3. The unit price provided per linear foot shall include all labor, materials, tools, equipment, and services for furnishing and installing the steel casing including all IFB #24-33-SD Measurement and Payment Route 1 Sewer Replacement Section No. 01 29 01-11 excavation including for boring and receiving pits, excavation of rock if required, trench support, any backfill, the casing pipe, boring, jacking, spacers, drain pipe, drain, end seals, grout, brick, blocking, design of support system, seal slab, de- watering, ground monitoring system, clean up, removal and disposal of all unsuit- able and excess material and all restoration required to restore disturbed areas to a condition equal to or better than pre-construction conditions, and all other appurte- nances required to properly install the steel casing. No additional payment shall be made for failures and subsequent withdrawals and boring attempts. U. 50-inch Diameter (minimum) Steel Casing: 1. Payment for casing shall be made at the unit price provided in the Schedule of Val- ues per linear foot for lengths of steel casing actually installed, as directed by the engineer, complete in place. 2. Measurements of lengths will be made horizontally, along the centerline of the steel casing. 3. The unit price provided per linear foot shall include all labor, materials, tools, equipment, and services for furnishing and installing the steel casing including all excavation including for boring and receiving pits, excavation of rock if required, trench support, any backfill, the casing pipe, boring, jacking, spacers, drain pipe, drain, end seals, grout, brick, blocking, design of support system, seal slab, de- watering, ground monitoring system, clean up, removal and disposal of all unsuit- able and excess material and all restoration required to restore disturbed areas to a condition equal to or better than pre-construction conditions, and all other appurte- nances required to properly install the steel casing. No additional payment shall be made for failures and subsequent withdrawals and boring attempts. V. Gravity Sewer Abandonment: 1. Payment for abandoning the sanitary sewer infrastructure as shown on the plans. Payment shall be lump sum. 2. No measurement for these items is anticipated 3. The lump sum price provided shall include all labor, materials, tools, equipment and services for furnishing, installing, flowable fill to abandon sanitary sewer pipes, seal/plug connections at manholes, and abandon manholes as shown on plans in- cluding, but not limited; traffic control, additional excavation including rock if re- quired, pavement removal, removal and disposal of existing pipe and manholes, trench support, dewatering, cleanup, removal and disposal of all unsuitable and ex- cess material, backfill and surface materials, including replacement of gravel, as- phalt, and concrete driveways and seeding and mulching, all restoration to restore disturbed areas to a condition equal to or better than pre-construction conditions and other incidental items required for the abandoning of the existing system. IFB #24-33-SD Measurement and Payment Route 1 Sewer Replacement Section No. 01 29 01-12 W. Stream Restoration: 1. Payment for all labor, material, and equipment necessary to restore natural stream banks to preconstruction contours and seeded in accordance with the contract draw- ings. 2. Measurement for square yards stream bank and bed restoration and seeding shall be made in the field. 3. The unit price provided for each square yard of stream restoration shall include all labor, materials, tools, equipment, and services for reconstructing stream banks and bed to preconstruction contours and furnishing and installing seeding and fertilizing including, but not limited to; handling and placing of topsoil, fine grading, handling and placing of permanent seed, temporary seeding as required to stabilize disturbed areas, handling and placing of fertilizer and lime, watering, testing and any other incidental items required for proper growth in the seeded area. X. Wetland Seed Mix (Permanent Conversion Impacts / Permanent Easements): 1. Payment for furnishing and installing recovered wetland topsoil, wetland seed mix, and straw mulch shall be made at the unit price provided per square yard of recov- ered wetland topsoil, wetland seed mix, and straw mulch installed, complete in place, for permanent conversion wetland impacts in accordance with the Wetland Permit Special Conditions. 2. Measurement for square yards of recovered wetland topsoil, wetland seed mix, and straw mulch shall be made in the field. 3. The unit price provided for each square yard of recovered wetland topsoil, wetland seed mix, and straw mulch shall include all labor, materials, tools, equipment, and services for furnishing and installing recovered wetland topsoil, wetland seed mix, and straw mulch including, but not limited to; handling and placing of recovered wetland topsoil, fine grading, handling and placing of wetland seed mixture, han- dling and placing of straw mulch, watering, testing and any other incidental items required for proper growth in the seeded area. Y. Wetland Seed Mix (Temporary Wetlands Impacts / Temporary Easements): 1. Payment for furnishing and installing recovered wetland topsoil, wetland seed mix, and straw mulch shall be made at the unit price provided per square yard of recov- ered wetland topsoil, wetland seed mix, and straw mulch installed, complete in place, for temporary wetland impacts in accordance with the Wetland Permit Spe- cial Conditions. 2. Measurement for square yards of recovered wetland topsoil, wetland seed mix, and straw mulch shall be made in the field. IFB #24-33-SD Measurement and Payment Route 1 Sewer Replacement Section No. 01 29 01-13 3. The unit price provided for each square yard of recovered wetland topsoil, wetland seed mix, and straw mulch shall include all labor, materials, tools, equipment, and services for furnishing and installing recovered wetland topsoil, wetland seed mix, and straw mulch including, but not limited to; handling and placing of recovered wetland topsoil, fine grading, handling and placing of wetland seed mixture, han- dling and placing of straw mulch, watering, testing and any other incidental items required for proper growth in the seeded area. Z. Wetland Plantings (Temporary Wetlands Impacts / Temporary Easements): 1. Payment for furnishing and installing wetland planting shall be made for each wet- land plant at the unit price provided in the Schedule of Values for each plant in- stalled, for temporary wetland impacts in accordance with the Wetland Permit Spe- cial Conditions. 2. Measurement for each wetland plant shall be made in the field. 3. The unit price provided for each wetland plant shall include all labor, materials, tools, equipment, and services for furnishing and installing wetland plants includ- ing, but not limited to; handling and placing of wetland plantings, watering, testing and any other incidental items required for proper growth in the planted area. 1.05 PAYMENT FOR MATERIALS NOT INCORPORATED INTO THE WORK A. Storage of Materials 1. Payment for equipment and materials stored on the site, or elsewhere as specified in the General Conditions, and not actually incorporated in the Work will be made on the basis of 95 percent of the amount of paid invoices submitted to the Owner for incorporation in the monthly estimate. B. Authorization for Payment 1. Payment will be authorized after the delivery to the construction site or other ap- proved location and after being certified by the Owner as being stored in confor- mation with the manufacturer’s recommendations and satisfactory evidence is pro- vided that the items are as specified. 2. Title to all items of equipment and materials upon which payment has been made shall be vested in the Owner and documents transferring title shall be executed by the Contractor. Transfer of ownership shall not relieve the Contractor of continuing insurance coverage and of protecting stored items against damage, deterioration, theft, or loss of any kind. 3. Should materials or equipment become damage or be stored improperly or contrary to the manufacturer’s recommendations, being therefore subject to later damage, then the Owner will reduce the next following monthly payment by an amount suf- ficient to repair or replace such units. IFB #24-33-SD Measurement and Payment Route 1 Sewer Replacement Section No. 01 29 01-14 4. To initiate a request for partial payment the Contractor shall submit his request in writing to the Owner with all necessary evidence. 5. Items of material or equipment to which partial payment applies includes and is limited to the following: a. Pipes, valves, and fittings are allowed for stored materials. PART 2 – PRODUCTS (not used) PART 3 – EXECUTION (not used) END OF SECTION 01 29 01 IFB #24-33-SD Construction Photographs Route 1 Sewer Replacement Section No. 01 32 33-1 SECTION 01 32 33 CONSTRUCTION PHOTOGRAPHS PART 1 - GENERAL 1.01 DESCRIPTION: A. Provide construction photographs pertinent to the Contract Work during the Contract period as indicated and in compliance with Contract Documents. 1. Section includes administrative and procedural requirements for the following: a. Preconstruction photographs. b. Periodic construction photographs. c. Final completion construction photographs. 1.02 SUBMITTALS: A. Submit the following shop drawings in accordance with Section D - General Conditions. B. Key Plan: Submit key plan of Project site with notation of vantage points marked for location and direction of each photograph. Include same information as corresponding photographic documentation. C. Digital Photographs: Submit image files within five days of taking photographs. 1. Digital Camera: Minimum sensor resolution of 8 megapixels. 2. Format: Minimum 3200 by 2400 pixels, in unaltered original files, with same aspect ratio as the sensor, uncropped, date and time stamped, in folder named by date of photograph, accompanied by key plan file. 3. Identification: Provide the following information with each image description in file metadata tag: a. Name of Project and Owner’s project number. b. Name of photographer. c. Name of Engineer. d. Name of Contractor. e. Date photograph was taken. IFB #24-33-SD Construction Photographs Route 1 Sewer Replacement Section No. 01 32 33-2 f. Description of vantage point, indicating location, direction by compass point of construction. g. Unique sequential identifier keyed to accompanying key plan. 1.03 QUALITY ASSURANCE: A. Comply with the requirements specified in Section D - General Conditions. 1.04 USAGE RIGHTS: A. Obtain and transfer copyright usage rights from photographer to Engineer and Owner for unlimited reproduction of photographic documentation. 1.05 DELIVERY STORAGE AND HANDLING: A. Comply with the requirements specified in Section 01 66 10 “Deliver, Storage and Handling”. PART 2 - PRODUCTS 2.01 PHOTOGRAPHIC MEDIA: A. Digital Images: Provide images in JPG format, produced by a digital camera with minimum sensor size of 8 megapixels, and at an image resolution of not less than 3200 by 2400 pixels. PART 3 - EXECUTION 3.01 CONSTRUCTION PHOTOGRAPHS: A. Photographer: Engage a qualified photographer to take construction photographs. B. General: Take photographs using the maximum range of depth of field, and that are in focus, to clearly show the Work. Photographs with blurry or out-of-focus areas will not be accepted. 1. Maintain key plan with each set of construction photographs that identifies each photographic location. C. Digital Images: Submit digital images exactly as originally recorded in the digital camera, without alteration, manipulation, editing, or modifications using image-editing software. 1. Date and Time: Include date and time in file name for each image. D. Preconstruction Photographs: Before commencement of excavation, commencement of demolition and starting construction, take photographs of Project site and surrounding IFB #24-33-SD Construction Photographs Route 1 Sewer Replacement Section No. 01 32 33-3 properties, including existing items to remain during construction, from different vantage points, as directed by Owner. 1. Flag excavation areas before taking construction photographs. 2. Take additional photographs as required to record settlement or cracking of adjacent structures, pavements, and improvements. E. Final Completion Construction Photographs: Take color photographs after date of Substantial Completion for submission as Project record documents. Owner will inform photographer of desired vantage points. 3.02 ROUTE PHOTOGRAPHY REQUIRED: A. Provide progressive photographs of route before commencement of construction: 1. Progressive photographs of route starting at one end of route and progressing to other end, then reverse progressive photography back to point of beginning. 2. Each exposure to overlap preceding exposure by 1/4 to 1/3 of the frame. 3. Additional photographs of features along route as directed by Owner. B. In the portions of the route where clearing is required make an additional set of progress photographs in similar manner specified for the initial route photography after all clearing work completed and before any other work commences in the cleared portion of the route. C. During Construction: 1. At least once per month to illustrate state of project, condition of construction and progress in the previous month. Work photographed in previous sessions only photographed again sufficiently to provide progressive continuity of work unless otherwise directed by Owner. 2. Such special photographs required by Owner. D. Upon Completion of All Construction Work: 1. Progressive photographs of route in same manner as that specified before commencement of Contract Work. 2. The route may be photographed in increments when work in that increment is completed and when approved by Owner. Each increment photography to overlap other increment photography sufficiently such that all photographs provide progressive views of the route throughout. END OF SECTION 01 32 33 IFB #24-33-SD Protection of Environment Route 1 Sewer Replacement Section No. 01 35 43-1 SECTION 01 35 43 PROTECTION OF ENVIRONMENT PART 1 - GENERAL 1.01 SUMMARY: A. Contractor, in executing Work, shall maintain Work areas on- and off-site free from environmental pollution that would be in violation of federal, state or local regulations as indicated and in compliance with Contract Documents. B. The control of environmental pollution requires consideration of air, water, and land, and involves management of noise and solid waste, as well as other pollutants. C. Any contamination shall be reported by the Contractor to the appropriate agencies, Owner and the Engineer, and cleaned up as per requirements. D. The Contractor shall be responsible for the protection of the natural environment of the Site and surrounding areas, both land and water. Protection of the environment must start with avoidance and prevention, and then control/mitigation, compensation, or enhancement (in order of descending preference). E. Schedule and conduct all work in a manner that will minimize the erosion of soils in the area of the Work. Provide erosion control measures such as diversion channels, sedimentation or filtration systems, berms, staked hay bales, seeding, mulching, or other special surface treatments as are required to prevent silting and muddying of streams, rivers, impoundments, lakes, etc. All erosion control measures shall be in place in an area prior to any construction activity in that area. F. Ensure that construction is achieved with a minimum of disturbance to the existing ecological balance between a water resource and its surroundings. It is the Contractor's responsibility to determine the specific construction techniques to meet these guidelines. G. Schedule and conduct all work in a manner that will minimize the level of noise escaping the site, especially at night and on weekends. H. Payment: 1. Consider Work specified in this Section incidental and include payment as part of appropriate lump sum or unit prices specified in Bid Form. 1.02 REFERENCES: A. United States Environmental Protection Agency (USEPA): 1. EPA-72-015: Guidelines for Erosion and Sedimentation Control Planning and Implementation IFB #24-33-SD Protection of Environment Route 1 Sewer Replacement Section No. 01 35 43-2 2. EPA 43019-73-007: Processes, Procedures, and Methods to Control Pollution Resulting from All Construction Activity B. Federal Environmental Protection Act and applicable regulations. C. Virginia Erosion and Sediment Control Handbook, Third Edition, 1992. 1.03 SUBMITTALS A. Submit shop drawings in accordance with the requirements of Section D - General Conditions. B. Prior to commencing any Work on this Contract and not later than ten (10) Working Days following receipt of the Notice to Proceed, the Contractor shall submit Environmental Protection shop drawings for the Owner’s and/or Engineer’s review and approval. Submit shop drawings for the following: 1. Plans and sketches showing areas proposed to be used for construction storage, the Contractor’s Site office, vehicle cleaning, equipment fueling and associated access routes. 2. Surface drainage and storm sewer control plan. 3. Erosion and sediment control plan 4. Waterways control plan. 5. Tree protection plan. 6. Mud and dust control plan. 7. Noise control plan. 8. Spills response and spills reporting plan. 9. Erosion and sediment control contingency plan. 10. Fire contingency plan. 11. Contaminated site contingency plan. 12. Historical resources contingency plan. 13. Fuel spills contingency plan IFB #24-33-SD Protection of Environment Route 1 Sewer Replacement Section No. 01 35 43-3 1.04 PROTECTION OF STORM SEWERS: A. Prevent construction material (including volatile liquid wastes such as oil, chemicals, paints), pavement, concrete, earth, or other debris from entering existing storm sewer or sewer structure. 1.05 PROTECTION OF WATERWAYS: A. Observe rules and regulations of Commonwealth of Virginia and Federal agencies of U.S. government prohibiting pollution of lakes, streams, rivers or wetlands by dumping of refuse, rubbish, dredge material or debris. 1. Permits obtained by Owner are included in the Contract Documents. 2. Other permits shall be obtained by Contractor at Contractor’s cost. B. The Contractor shall not cause or permit action to occur which would cause an overflow to existing waterways. Provide holding ponds or accepted method which will divert flows, including storm flows and flows created by construction activity, to prevent excessive silting of waterways or flooding damage to property. C. Comply with procedures outlined in U.S. EPA manuals entitled, “Guidelines for Erosion and Sedimentation Control Planning and Implementation”, Manual EPA-72-015 and “Processes, Procedures, and Methods to Control Pollution Resulting from All Construction Activity”, Manual EPA 43019-73-007. In cases of conflicts, the most stringent requirements will govern this contract. 1.06 STORM WATER DISCHARGE: A. Contractor shall comply with Virginia Environmental Protection Agency’s National Pollution Discharge Elimination System, (NPDES) Storm Water permit for construction site activities. As minimum Contractor is required to prepare, submit, and comply with following. 1. Notice of Intent (NOI). 2. Storm Water Pollution Plan. B. Comply with procedures outlined in U.S. EPA manuals entitled, “Guidelines for Erosion and Sedimentation Control Planning and Implementation”, Manual EPA-72-015 and “Processes, Procedures, and Methods to Control Pollution Resulting from All Construction Activity”, Manual EPA 43019-73-007. In cases of conflicts, the most stringent requirements will govern this contract. IFB #24-33-SD Protection of Environment Route 1 Sewer Replacement Section No. 01 35 43-4 1.07 EROSION AND SEDIMENT CONTROL: A. Apply appropriate soil conservation measures to protect project area and adjacent lands. These measures may include, but not be limited to, mulching, rapid growth vegetation, fabric mat, hay bales, filter barriers, sediment traps, and basins. B. Select methods of erosion and sediment control for specific job site. 1. Adjust sediment control measures in field to meet conditions encountered. C. Provide erosion control measures, in place, before commencing work on project site. 1. Maintain erosion control measure during course of construction. 2. Remove erosion control measures upon establishment of permanent, surface stabilization. D. Complete temporary or permanent stabilization of surface of perimeter controls, dikes, swales, ditches, perimeter slopes, and slopes greater than 3:1 within seven (7) calendar days following initial soil disturbance. Stabilize other disturbed or graded areas within forteen (14) calendar days. 1.08 PROTECTION OF AIR QUALITY: A. Minimize air pollution by requiring use of properly operating combustion emission control devices on construction vehicles and equipment and encourage shutdown of motorized equipment not in use. B. Do not burn trash on or adjacent to construction site. C. If temporary heating devices are necessary for protection of Work, they shall not cause air pollution. D. The Contractor shall conduct operations of dumping rock and of carrying rock away in trucks in such a way as to minimize dust. Give unpaved streets, roads, detours, or haul roads used in construction area a dust-preventive treatment or periodically water them to prevent dust. Strictly adhere to all applicable environmental regulations for dust prevention. 1.09 NOISE CONTROL: A. Conduct operations to cause least annoyance to residents in vicinity of Work, and comply with applicable local ordinances. B. Equip compressors, hoists, and other apparatus with mechanical devices necessary to minimize noise and dust. Equip compressors with silencers on intake lines. C. Equip gasoline or oil-operated equipment with silencers or mufflers on intake and exhaust lines. IFB #24-33-SD Protection of Environment Route 1 Sewer Replacement Section No. 01 35 43-5 D. Conduct operation of dumping rock and of carrying rock away in trucks so as to cause minimum of noise and dust. E. Route vehicles carrying rock, concrete or other material over such streets as will cause least annoyance to public and do not operate on public streets between hours of 5:00 p.m. and 7:00 a.m., or on Saturdays, Sundays or legal holidays unless accepted by Owner. F. No excessive idling of motorized equipment is permitted. G. Submit a plan to mitigate construction noise and to comply with noise control ordinances, including methods of construction, equipment to be used, and acoustical treatments. 1.10 MUD AND DUST CONTROL: A. Due to close geographic location of Project to other off-site facilities and residential homes take special care in providing and maintaining temporary site roadways, Owner’s existing roads, and public roads used during construction operations in clean, dust free condition. B. Comply with local environmental regulations for dust control. If Contractor’s dust control measures are considered inadequate by Owner, Owner may require Contractor to take additional dust control measures. C. The Contractor shall employ only wet type equipment for saw cutting and concrete grinding to control dust nuisance. There shall be no cutting prior to the Engineer’s and Owner’s approval. D. The Contractor shall obtain the Owner's acceptance before chemicals for dust control are used. Sodium chloride is not permitted for dust control. E. The Contractor shall not use calcium chloride on access roads. F. The Contractor shall transport dusty materials in covered haulage vehicles. G. The Contractor shall be responsible for a prompt and complete clean up of all dirt and mud deposited on the public and/or private property as a consequence of the execution of the Work. In the event that the Contractor fails to comply with this obligation the Owner may proceed with the necessary clean up and charge all the costs for the cleanup to the Contractor. H. The Contractor shall wash mud from construction vehicles before leaving the construction Site. I. The Contractor shall wash and clean the following roads at the end of each work day during the Contract: 1. Major traffic routes inside the site and County/VDOT streets impacted by construction activities. IFB #24-33-SD Protection of Environment Route 1 Sewer Replacement Section No. 01 35 43-6 1.11 FUELS AND LUBRICANTS: A. Comply with local, state, and federal regulations concerning transportation and storage of fuels and lubricants. B. The Contractor shall designate an area within the working limits to be used exclusively for fueling of construction equipment. The Contractor shall carry out all refueling in this area only. Refueling of backhoes or shovels will be allowed at locations other than the accepted refueling areas, but not closer than 30 feet from any watercourse. C. Fuel storage area and fuel equipment shall be approved by Owner prior to installation. Submit containment provisions to Owner for approval. D. The Contractor shall submit to the Owner for review prior to starting the Work, procedures for the interception and rapid clean-up and disposal of fuel spillages which may occur. The Contractor shall ensure that the materials required for the clean-up of fuel spillages are readily accessible on Site at all times. E. The cleaning of equipment in streams and lakes and the emptying of fuel, lubricants and pesticides into watercourses is prohibited. The Contractor shall contain fuel, lubricants, pesticides and construction debris and dispose of it off Site in approved locations. F. Report spills or leaks from fueling equipment or construction equipment to Owner and cleanup as required by local, state, or federal regulations. G. Owner may require Contractor to remove damaged or leaking equipment from Project site. 1.12 CONTINGENCY AND EMERGENCY RESPONSE PLANS: A. General 1. The Contractor shall adopt a pollution preventative strategy to fulfill its commitment to protecting public and worker health and safety, and the environment. Through this strategy, the potential issues and emergency events that can be anticipated shall be identified by the Contractor and procedures put in place by the Contractor to minimize their potential occurrence. 2. To address any unanticipated events, the Contractor shall develop Contingency and Emergency Response Plans and implement these plans during the performance of the Work. B. Spills Response and Spills Reporting: 1. Prior to commencing construction, the Contractor shall be responsible for preparing a Spills Response Plan. The Spills Response Plan must address the response, containment, and cleanup of an accidental spill. It must take care of the specific roles and responsibilities of construction staff, accountability, reporting and documentation. Specifically, the plan must include: IFB #24-33-SD Protection of Environment Route 1 Sewer Replacement Section No. 01 35 43-7 a. the names and the telephone numbers of the persons in the local municipalities to be notified forthwith of a spill b. the names and the telephone numbers of the representatives of the fire, the police and the health departments of the local municipalities who are responsible to respond to emergency situations c. the names and the telephone numbers of the companies experienced in the control and clean-up of hazardous materials that would be called upon in an emergency involving a spill d. the Contractor's proposal for the immediate containment and control of the spill, the clean-up procedures to be initiated immediately and any other action to be taken to mitigate the potential environmental damage while awaiting additional assistance, and, e. the name and the telephone number of the Contractor's representative responsible for preparing, implementing, directing, and supervising the contingency plan 2. The Contractor shall submit for the Owner's review and for the review of other authorities having jurisdiction a copy of the Spills Response plan and shall make the appropriate changes to it based upon the comments received from these authorities. 3. In the event of a spill or other emission of a pollutant caused by the execution of the Work into the natural environment, the Contractor shall immediately notify the following of the spill, of the circumstances thereof, and of the action taken or intended to be taken with respect thereto: a. Local Regulating Agency b. The Owner c. The person having control of the pollutant, if known, d. The Engineer 4. The Contractor shall make the necessary allowances to ensure the immediate availability of the products with which to effect temporary repair to broken pipelines and other services so the spill or other emission of a pollutant is immediately controlled and stopped and to mitigate the damages. The Contractor shall do everything practicable to restore the natural environment. 5. The Contractor shall prepare a written report of the spill, and the spill event is to be recorded in the Contractor's log book. The report must contain the following information, at a minimum: a. Date and time spill occurred. IFB #24-33-SD Protection of Environment Route 1 Sewer Replacement Section No. 01 35 43-8 b. Estimated volume of spill. c. Duration of the spill. d. Cause and discovery of the spill. e. Cleanup and recovery measures taken. f. Name of hauler or outside contractors called in to assist with cleanup and recovery measures. g. Personnel on the scene. h. Names of parties and agencies notified and the date and time of notification of each. i. Steps to be taken to prevent a reoccurrence of the spill. C. Fire Contingency Plan 1. The Contractor shall develop and submit a Fire Contingency Plan to ensure a rapid response to a fire thereby minimizing the threat to worker and public safety, and the environment. 2. The plan must include, but is not limited to an explanation of the purpose of the plan and when the plan is triggered, an explanation of relevant roles and responsibilities, and accountability for implementing the plan, and provision of fire prevention training and equipment for implementing the plan. 1.13 NOTIFICATIONS: A. The Owner will notify the Contractor in writing of any non-compliance with the foregoing provisions or of any environmentally objectionable acts and corrective action to be taken. State or local agencies responsible for verification of certain aspects of the environmental protection requirements shall notify the Contractor in writing, through the Engineer or Owner, of any non-compliance with State or local requirements. The Contractor shall, after receipt of such notice from the Engineer, Owner, or from the regulatory agency through the Engineer or Owner, immediately take corrective action. Such notice, when delivered to the Contractor or his authorized representative at the site of the work, shall be deemed sufficient for the purpose. If the Contractor fails or refuses to comply promptly, the Owner may issue an order stopping all or part of the work until satisfactory corrective action has been taken. No part of the time lost due to any such stop orders shall be made the subject of a claim for extension of time or for excess costs or damages by the Contractor unless it is later determined that the Contractor was in compliance. IFB #24-33-SD Protection of Environment Route 1 Sewer Replacement Section No. 01 35 43-9 1.14 IMPLEMENTATION: A. Prior to commencement of the Work, meet with the Owner to develop mutual understandings relative to compliance with this provision and administration of the environmental pollution control program. B. Remove temporary environmental control features, when accepted by the Owner, and incorporate permanent control features into the project at the earliest practicable time. C. Implementation of the Contingency and Emergency Response Plans 1. The responsibility for implementing the Contingency and Emergency Response Plans shall lie with the Contractor. Specific responsibilities include: a. Reviewing the Contingency Plans and Emergency Response Plans and identifying any issues / concerns and providing suggested changes / updates; b. Ensuring that all construction staff are trained in Contingency Plan Implementation and Emergency Response Techniques and that they have the appropriate equipment on hand; c. Providing advice to construction staff on proper emergency response procedures; d. Auditing the Contractor’s response to events resulting in the activation of its Contingency Plans and Emergency Response Plans; e. Initiating actions to correct any response deficiencies identified through the audit process and reporting it; f. Maintaining emergency response records for review by the Owner and the appropriate regulatory agencies. PART 2 - PRODUCTS (not used) PART 3 - EXECUTION (not used) END OF SECTION 01 35 43 IFB #24-33-SD Delivery, Storage and Handling Route 1 Sewer Replacement Section No. 01 66 10-1 SECTION 01 66 10 DELIVERY, STORAGE AND HANDLING PART 1 - GENERAL 1.01 GENERAL: A. This Section specifies the general requirements for the delivery handling, storage and protection for all items required in the construction of the Work as indicated and in compliance with the Contract Documents. Specific requirements, if any, are specified with the related item. 1.02 TRANSPORTATION AND DELIVERY: A. Transport and handle items in accordance with manufacturer's printed instructions. B. Schedule delivery to reduce long term on-site storage prior to installation and/or operation. Under no circumstances shall equipment be delivered to the site more than one month prior to installation without written authorization from the Owner. C. Ship equipment, material and spare parts complete except where partial disassembly is required by transportation regulations or for protection of components. D. Pack spare parts in containers bearing labels clearly designating contents and pieces of equipment for which intended. All spare parts shall be cross-referenced to their applicable Specification Section. E. Carefully pack and crate equipment for shipment. Protect polished and machined metal surfaces from corrosion and damage during shipment and installation. Specially pack electrical equipment to prevent damage by moisture. Cover equipment having exposed bearings and glands to exclude foreign matter. Carefully pack machines for shipment and protect electrical equipment from moisture damage. Protect bearings, seals and glands from grit and dirt. F. Identify each component with durable identifying labels or tags securely attached to each piece of equipment, crate or container. G. Finished surfaces of all exposed flanges shall be protected by fiberboard blank flanges strongly built and securely bolted thereto. H. Deliver spare parts at same time as pertaining equipment. Deliver spare parts to owner after completion of work. I. Coordinate delivery with installation to ensure minimum holding time for items that are hazardous, flammable, easily damaged or sensitive to deterioration. IFB #24-33-SD Delivery, Storage and Handling Route 1 Sewer Replacement Section No. 01 66 10-2 J. Deliver products to the site in manufacturer's original sealed containers or other packing systems, complete with instructions for handling, storing, unpacking, protecting and installing. K. Assume responsibility for equipment material and spare parts just before unloading from carrier at site. L. All items delivered to the site shall be unloaded and placed in a manner which will not hamper the Contractor's normal construction operation or those of subcontractors and other contractors and will not interfere with the flow of necessary traffic. M. Provide equipment and personnel to unload all items delivered to the site. N. Promptly inspect shipment to assure that products comply with requirements, quantities are correct, and items are undamaged. For items furnished by others (i.e. Owner, other Contractors), perform inspection in the presence of the Owner. Notify Owner verbally, and in writing, of any problems. O. Pay all demurrage charges if failed to promptly unload items. 1.03 STORAGE AND PROTECTION: A. Store and protect products and equipment in accordance with the manufacturer's instructions, with seals and labels intact and legible. Storage instruction shall be studied by the Contractor and reviewed with the Owner. Instructions shall be carefully followed and a written record of this kept by the Contractor for each product and pieces of equipment. B. Arrange storage of products and equipment to permit access for inspection. Periodically inspect to make sure products and equipment are undamaged and are maintained under specified conditions. C. Store loose granular materials on solid flat surface in a well-drained area. Prevent mixing with foreign matter. D. Precast concrete shall be handled and stored in a manner to prevent accumulations of dirt, standing water, staining, chipping or cracking. Brick, block and similar masonry products shall be handled and stored in manner to reduce breakage, cracking and spalling to a minimum. PART 2 - PRODUCTS (not used) PART 3 - EXECUTION (not used) END OF SECTION 01 66 10 IFB #24-33-SD Cleaning Up Route 1 Sewer Replacement Section No. 01 74 23-1 SECTION 01 74 23 CLEANING UP PART 1 - GENERAL 1.01 SUMMARY: A. Execute cleaning during progress of Work and at completion of Work as indicated and in compliance with Contract Documents. B. Refer to specification sections for specific cleaning for Products or Work. 1.02 DISPOSAL REQUIREMENTS: A. Conduct cleaning and disposal operations to comply with local codes, ordinances, regulations, and anti-pollution laws. Do not burn or bury rubbish or waste materials on Project site. Do not dispose of volatile wastes, such as mineral spirits, oil, or paint thinner, in storm or sanitary drains. Do not dispose of wastes into streams or waterways. PART 2 - PRODUCTS 2.01 MATERIALS: A. Use only those cleaning materials which will not create hazards to property and persons or damage surfaces of material to be cleaned. B. Use only cleaning materials recommended by manufacturer of surface to be cleaned. PART 3 - EXECUTION 3.01 CLEANING DURING CONSTRUCTION: A. At all times maintain areas covered by the contract and adjacent properties and public access roads free from accumulations of waste, debris, and rubbish caused by construction operations. A. During execution of work, clean site, adjacent properties, and public access roads and dispose of waste materials, debris, and rubbish to assure that buildings, grounds, and public properties are maintained free from accumulations of waste materials and rubbish. Unneeded construction equipment shall be removed and all damage repaired so that the public and property owners will be inconvenienced as little as possible. B. Wet down dry materials and rubbish to lay dust and prevent blowing dust. IFB #24-33-SD Cleaning Up Route 1 Sewer Replacement Section No. 01 74 23-2 C. Cover or wet excavated material leaving and arriving at the site to prevent blowing dust. Clean the public access roads to the site of any material falling from the haul trucks. D. Where material or debris has washed or flowed into or been placed in existing watercourses, ditches, gutters, drains, pipes structures, work done under this contract, or elsewhere during the course of the Contractor’s operations, such material or debris shall be entirely removed and satisfactorily disposed of during the progress of the work, and the ditches, channels, drains, pipes, structures, and work, etc., shall, upon completion of the work, be left in a clean and neat condition. E. On or before the completion of the work, the Contractor shall, unless otherwise especially directed or permitted in writing, tear down and remove all temporary buildings and structures built by them; shall remove all temporary works, tools, and machinery or other construction equipment furnished by them; shall remove, acceptably disinfect, and cover all organic matter and material containing organic matter in, under, and around privies, houses, and other buildings used by them; shall remove all rubbish from any grounds which he has occupied; and shall leave the roads and all parts of the premises and adjacent property affected by his operations in a neat and satisfactory condition. F. Provide on-site containers for collection and removal of waste materials, debris, and rubbish in accordance with applicable regulations. 3.02 FINAL CLEANING: A. General: Perform final cleaning. Conduct cleaning and waste-removal operations to comply with local laws and ordinances and Federal and local environmental and antipollution regulations. a. Clean Project site, yard, and grounds, in areas disturbed by construction activities, including landscape development areas, of rubbish, waste material, litter, and other foreign substances. b. Sweep paved areas broom clean. Remove petrochemical spills, stains, and other foreign deposits. c. Remove tools, construction equipment, machinery, and surplus material from Project site. d. Avoid disturbing natural weathering of exterior surfaces. Restore reflective surfaces to their original condition. e. Remove debris and surface dust from limited access spaces, including roofs, plenums, shafts, trenches, equipment vaults, manholes, attics, and similar spaces. f. Remove labels that are not permanent. IFB #24-33-SD Cleaning Up Route 1 Sewer Replacement Section No. 01 74 23-3 END OF SECTION 01 74 23 IFB #24-33-SD Demolition Route 1 Sewer Replacement Section No. 02 41 00-1 SECTION 02 41 00 DEMOLITION PART 1 - GENERAL 1.01 DESCRIPTION: A. Provide demolition and alterations of existing conditions as indicated and in compliance with the Contract Documents. 1.02 REFERENCES: A. United States Environmental Protection Agency (USEPA): 1. 832: Storm Water Management for Construction Activities: Developing Pollution Prevention Plans and Best Management Practices. 1.03 SUBMITTALS: A. Submit the following in accordance with Section D - General Conditions. 1. Demolition Plan. 1.04 QUALITY ASSURANCE: A. Comply with the requirements specified in Section D - General Conditions. B. Demolition Plan: Provide description of sequence, methods, and equipment used for demolition (including disposal). 1.05 DELIVERY STORAGE AND HANDLING: A. Comply with the requirements specified in Section D - General Conditions. PART 2 - PRODUCTS (not used) PART 3 - EXECUTION 3.01 PREPARATION: A. Survey Markers and Monuments: 1. Provide three reference points, established by a licensed land surveyor, for each survey marker or monument temporarily removed. Record locations and designations of survey markers and monuments prior to removal. IFB #24-33-SD Demolition Route 1 Sewer Replacement Section No. 02 41 00-2 2. Store removed markers and monuments during demolition work, and replace upon completion of work. Reestablish survey markers and monuments in conformance with recorded reference points. Forward letter to Owner, signed by a licensed land surveyor, verifying reestablishment of survey markers and monuments. B. Burning of demolition debris is prohibited. C. Protect existing structures, equipment, and appurtenances to remain. D. Obtain permission from Owner before abandoning or removing existing structures, materials, equipment and appurtenances. E. Exercise necessary precautions for fire prevention. F. Maintain circulation of traffic within area at all times during demolition operations. 3.02 DEMOLITION: A. Demolish and remove existing construction, utilities, equipment, and appurtenances. B. Provide maximum practicable protection from inclement weather for materials, equipment, and personnel located in partially dismantled structures. C. Protect persons and property throughout progress of work. Provide safe working conditions for personnel. D. Wet down work during demolition operations to prevent dust from arising. Minimize spread of dust and airborne particles. E. Cap or plug with non-shrink grout, pipes and other conduits which are abandoned in place. F. Removed materials, equipment, and appurtenances, not designated for relocation, become property of Contractor and shall be disposed of offsite. 3.03 SALVAGE: A. Store equipment to be salvaged or relocated as directed by Owner. 3.04 REPAIR/RESTORATION: A. Repair or remove items that are damaged. Repair and install damaged items to condition at least equal to that which existed prior to start of work. 3.05 CLOSEOUT ACTIVITIES: A. Provide in accordance with General Conditions. IFB #24-33-SD Demolition Route 1 Sewer Replacement Section No. 02 41 00-3 END OF SECTION 02 41 00 IFB #24-33-SD Cast-in-Place Concrete Section No. 03 30 00-1 Route 1 Sewer Replacement SECTION 03 30 00 CAST-IN-PLACE CONCRETE PART 1 - GENERAL 1.01 RELATED DOCUMENTS The general provisions of the Contract, including General Conditions and General Requirements apply to the Work specified in this Section. Work accomplished under this Section shall be in accordance with the County standard details. 1.02 DESCRIPTION OF WORK A. The Contractor shall provide all labor, equipment, tools, services, and materials necessary for, or incidental to, the construction of concrete driveway repairs. B. The work includes: 1. Wood and steel formwork for cast-in-place concrete, complete with shoring, bracing and anchorage. 2. Reinforcing steel bars and welded steel wire fabric for cast-in-place concrete, complete with tie wire, support chairs, bolsters, bar supports, spacers and all accessories for reinforcing. 3. Mixing, transporting, placing and finishing of cast-in-place concrete. 1.03 SUBMITTALS The Contractor shall submit the following for approval in accordance with Section D - General Conditions: A. Concrete Mix Design: Including slump test results, 28-day compressive strength, and any admixtures or curing materials required. B. Formwork Materials. C. Reinforcing Materials: Including steel bars and welded steel wire fabric. D. Joint Sealer/Filler. E. Concrete placing schedules. PART 2 - PRODUCTS 2.01 CONCRETE IFB #24-33-SD Cast-in-Place Concrete Section No. 03 30 00-2 Route 1 Sewer Replacement A. Concrete work shall meet the requirements of ACI 301-95 with the exception to the following. 1. Cement for concrete shall be ASTM C150, Type I or II. 2. The 28-day compressive strength of concrete shall be Class “B” 3,000 psi for slabs on grade reinforced with welded wire fabric as designated on the drawings. The maximum slump shall be three (3) inches. 3. The concrete design mix may be taken from a four-point design curve that is current with the concrete producer. 4. All concrete shall be air-entrained concrete conforming to ASTM C260. Air content shall be six percent (6%) plus or minus one percent (1%). Air entraining admixture shall be BASF Construction Chemicals, LLC MB- AE 90, W.R. Grace Daravair or approved equal. 5. The removal of forms shall be done in a manner that will support all loads including dead load and construction live load. 2.02 ADMIXTURES Water reducing admixtures shall conform to ASTM C494, Type A. The water reducing admixture used must be approved in writing by the Engineer. The water reducer shall be BASF Construction Chemicals, LLC PolyHeed, W.R. Grace WRDA w/HYCOL or equal. 2.03 REINFORCING STEEL A. Reinforcing steel shall be ASTM A615 Grade 60. B. Welded wire fabric shall be ASTM A185. PART 3 – EXECUTION 3.01 CONCRETE Concrete work shall meet the requirements of ACI 301-95 and the following modifications and supplements. A. Forms used for formed concrete shall produce a smooth formed finish. All exposed, formed concrete shall receive smooth rubbed finish. B. Remove all fins and projections; clean all honeycombs and tie holes; patch with concrete; fill all bugholes and surface blemishes as required to provide a smooth uninterrupted surface similar to a grout cleaned finish. IFB #24-33-SD Cast-in-Place Concrete Section No. 03 30 00-3 Route 1 Sewer Replacement C. All Type II concrete shall be cured by an approved method for a minimum of seven (7) days. D. Immediately after placement, concrete shall be protected from premature drying; apply Master Builders “Confilm” to flat slabs; extremes in temperatures, rapid temperature change, mechanical injury and injury from rain and flowing water. All materials and equipment needed for adequate curing and protection shall be available and at the placement prior to placing concrete. No fire or excessive heat shall be permitted near or in direct contact with the concrete at any time. Curing shall be accomplished by and of the following methods, or combination thereof, as approved. 1. Moist Curing: Concrete to be moist-cured shall be maintained continuously wet for the entire curing period. If water or curing materials used, stains or discolors concrete surfaces which are to be permanently exposed, the concrete surfaces shall be cleaned. When wooden forms are left in place during curing, they shall be kept wet at all times. If the forms are removed before the end of the curing period, curing shall be carried out as on uniformed surfaces, using suitable materials. Horizontal surfaces shall be cured by ponding, by covering with a 2-inch minimum thickness of continuously saturated sand, or by covering with waterproof paper, polyethylene sheet, polyethylene-coated burlap or saturated burlap. 2. Membrane Curing: Membrane curing shall not be used on surfaces that are to receive any subsequent treatment depending on adhesion or bonding to the concrete. The curing compound shall be white pigmented and shall be applied to formed surfaces immediately after the forms are removed and prior to any patching or other surface treatment except the cleaning of loose sand, mortar, and debris from the surface. The formed surfaces shall be thoroughly moistened with water and the curing compound shall be applied. Curing compound shall be applied to slab surfaces as soon as the bleeding water has disappeared, with the tops of joints being temporarily sealed to prevent entry of the compound and to prevent moisture loss during the curing period. The compound shall be applied in a one-coat continuous operation by mechanical spraying equipment, at a uniform coverage in accordance with the manufacturer’s printed instructions. Concrete surfaces subjected to rainfall within 3 hours after the curing compound has been applied shall be resprayed by the method at the coverage herein specified. Surfaces coated with curing compound shall be kept free of foot and vehicular traffic, and from other sources of abrasion and contamination during the curing period. E. Environmental Conditions: 1. Hot weather concreting shall follow the recommendations of ACI 305. IFB #24-33-SD Cast-in-Place Concrete Section No. 03 30 00-4 Route 1 Sewer Replacement 2. Cold weather concreting shall follow the recommendations of ACI 306, particularly Table 1.4.1 – Recommended Concrete Temperatures and Table 1.4.2 – Protection Recommended for Concrete Placed in Cold Weather. When ambient placement temperatures are less than 50°F, all concrete shall contain a non- chloride accelerating admixture conforming to ASTM C494, Type C or E, and shall be used in accordance with the manufacturer’s recommendations. 3.02 REINFORCING STEEL A. All reinforcing steel splices shall be Class B under applicable categories per ACI 318-99 and ACI Detailing Manual – 1994. B. Placement of reinforcement and accessories shall be in accordance with CRSI Pub. “Placing Reinforcing Bars,” Sixth Edition, 1992. C. All reinforcement within the limits of a day’s pour shall be in place and the Resident Project Representative shall be notified in sufficient time to permit the inspection before concreting begins. END OF SECTION 03 30 00 IFB #24-33-SD Site Clearing Route 1 Sewer Replacement Section No. 31 10 00-1 SECTION 31 10 00 SITE CLEARING PART 1 - GENERAL 1.01 DESCRIPTION: A. Provide site clearing as indicated and in compliance with the Contract Documents. B. Section Includes: 1. Clearing and grubbing. 2. Tree and shrub protection and removal. 3. Removal of debris related to clearing and grubbing operations. 1.02 DEFINITIONS: A. Caliper: Instrument used to measure tree diameter. B. Clearing: Removal and disposal of above-ground items defined herein. C. Grubbing: Removal and disposal of below-ground items defined herein. 1.03 SUBMITTALS: A. Submit the following in accordance with Section D - General Conditions. 1. Permits a. Copy of Land Disturbance Permit. 2. Certificates a. Copy of herbicide label bearing EPA registration number. 1.04 QUALITY ASSURANCE: A. Comply with the requirements specified in Section D - General Conditions. B. Permits: 1. Obtain Land Disturbance Permit from an accepted Erosion and Sediment Control Plan. See Section D - General Conditions for additional requirements. Submit copy of permit to Owner. IFB #24-33-SD Site Clearing Route 1 Sewer Replacement Section No. 31 10 00-2 1.05 DELIVERY STORAGE AND HANDLING: A. Comply with the requirements specified in Section D - General Conditions. 1.06 SITE CONDITIONS: A. Existing facilities, structures, and utilities are shown in accordance with available surveys and records. The indicated locations of underground utilities and structures are approximate. Other utilities may exist which are not indicated. PART 2 - PRODUCTS (not used) PART 3 - EXECUTION 3.01 EXAMINATION: A. Verify survey benchmarks and intended elevations for the Work are as indicated. B. Verify temporary erosion and sediment control measures are installed before commencing with any other work at the site. C. Verify location and existence of all underground utilities and structures by contacting utility owners, as required by law and “Miss Utility” 48 hours prior to starting work, by dialing 811 or going http://va811.com/professionals/ for more information. Dial 1-800- 552-7001 for assistance. D. Contact utility companies and authorities to make arrangements for handling and disposal of utilities encountered during construction. 3.02 PREPARATION: A. Protect bench marks, survey control points, and existing structures to remain from damage or displacement. B. Protect trees and vegetation to remain. Do not cut or injure trees and vegetation outside easement lines and outside designated clearing areas. C. Protect all underground utilities and structures that are to remain. If damage occurs, immediately notify the utility owner within the hour. D. Protect site features to remain from damage by construction equipment and vehicular traffic. E. Identify waste and salvage areas for stockpiling of removed materials. http://va811.com/professionals/ IFB #24-33-SD Site Clearing Route 1 Sewer Replacement Section No. 31 10 00-3 3.03 RESTORATION: A. Existing surfaces, features, utilities, or structures that are to remain but are damaged during construction shall be restored to at least the condition in which they were found immediately before work began, unless noted otherwise. B. Restore damaged utilities to the satisfaction of the utility owner. C. Restore damaged private property to the satisfaction of the property owner. 3.04 CLEARING: A. Remove and dispose of off site: 1. Trees, snags, brush, shrubs, downed timber, decayed wood, and other vegetative growth. 2. Rocks, lumps of concrete, trash piles, debris, refuse, rubbish and fencing. Remove all evidence of their presence from the surface. B. Clear ground within limits of work and width of permanent easement, unless otherwise noted. C. Manual cutting of trees, stumps, and stubs during clearing shall be as close to ground surface as practicable but no higher than 6 inches above ground for small trees (8 inches or less), and not higher than 12 inches above ground for larger trees (greater than 8 inches). D. Obey all federal, state and local regulations and guidance regarding the cutting, and disposal of diseased trees and vegetation. 3.05 CLEARING IN WOODED AREAS: A. Chip and spread cleared wood within clearing limits and cover as indicated. 3.06 GRUBBING: A. Remove and dispose of all stumps, buried logs, matted roots, roots larger than 2 inches, and organic materials off site. B. Roots larger than 2 inches in diameter shall be removed to a depth of 12 inches, and roots larger than 1/2-inches in diameter to a depth of 6 inches. C. Areas designated to receive pavement or structures shall be grubbed a depth of 18 inches. Measure depths of cut from existing ground surface or proposed finished grade, whichever is lower. D. Apply herbicide to remaining roots and vegetation to inhibit growth. E. Depressions made by grubbing shall be filled with suitable material and compacted to conform to original adjacent grade. IFB #24-33-SD Site Clearing Route 1 Sewer Replacement Section No. 31 10 00-4 F. Do not grub areas within drip line of trees to remain to avoid damage to roots. 3.07 TREE AND SHRUB REMOVAL: A. Remove trees and shrubs within permanent and temporary easement by felling or cutting individual vegetation and grubbing. 3.08 TREE AND SHRUB PROTECTION: A. Protect and prune indicated designated trees and shrubs within the clearing limits. 3.09 PRUNING: A. Trim dead branches 1-1/2-inches or more in diameter and branches to heights and in a manner as indicated. Neatly cut limbs and branches close to the bole of the tree or main branches. Paint cuts more than 1-1/4-inches in diameter tree wound paint. 3.10 BURNING: A. Burning is not permitted on site. 3.11 CLEANING: A. Promptly dispose of excess and unsuitable material off site. B. Remove debris, junk, and trash from site. C. Leave site in clean condition, ready for subsequent work. D. Clean up spillage and wind-blown debris before entering public or private property, adjacent to site. 3.12 CLOSEOUT ACTIVITIES: A. Provide in accordance with Section D - General Conditions. END OF SECTION 31 10 00 IFB #24-33-SD Earth Moving Route 1 Sewer Replacement Section No. 31 20 00 SECTION 31 20 00 EARTH MOVING PART 1 - GENERAL 1.01 SUMMARY A. Section Includes: 1. Excavating and filling for rough grading the Site. 2. Preparing subgrades for slabs-on-grade, walks, pavements, and turf and grasses. 3. Excavating and backfilling for structures. 4. Excavating and backfilling trenches for utilities and pits for buried utility structures. 1.02 DEFINITIONS A. Backfill: Soil material used to fill an excavation. 1. Initial Backfill: Backfill placed beside and over pipe in a trench, including haunches to support sides of pipe. 2. Final Backfill: Backfill placed over initial backfill to fill a trench. B. Base Course: Aggregate layer placed between the subbase course and hot-mix asphalt paving. C. Bedding Course: Aggregate layer [VDOT #57 Stone] placed over the excavated subgrade in a trench before laying pipe. D. Borrow Soil: Satisfactory soil imported from off-site for use as fill or backfill. E. Drainage Course: If called for by geotechnical engineer, aggregate layer supporting the slab-on-grade that also minimizes upward capillary flow of pore water. F. Excavation: Removal of material encountered above subgrade elevations and to lines and dimensions indicated. 1. Authorized Additional Excavation: Excavation below subgrade elevations or beyond indicated lines and dimensions as directed by Owner. Authorized additional excavation and replacement material will be paid for according to Contract provisions for changes in the Work. 2. Unauthorized Excavation: Excavation below subgrade elevations or beyond indicated lines and dimensions without direction by Owner. Unauthorized excavation, as well as remedial work directed by Owner, shall be without additional compensation. IFB #24-33-SD Earth Moving Route 1 Sewer Replacement Section No. 31 20 00 G. Fill: Soil materials used to raise existing grades. H. Structures: Buildings, footings, foundations, retaining walls, slabs, tanks, curbs, mechanical and electrical appurtenances, or other man-made stationary features constructed above or below the ground surface. I. Subbase Course: Aggregate layer placed between the subgrade and base course for hot- mix asphalt pavement, or aggregate layer placed between the subgrade and a cement concrete pavement or a cement concrete or hot-mix asphalt walk. J. Subgrade: Uppermost surface of an excavation or the top surface of a fill or backfill immediately below subbase, drainage fill, drainage course, or topsoil materials. K. Utilities: On-site underground pipes, conduits, ducts, and cables as well as underground services within buildings. 1.03 PREINSTALLATION MEETINGS A. Pre-installation Conference: Conduct pre-excavation conference at Project site. 1.04 INFORMATIONAL SUBMITTALS A. Material test reports. 1.05 FIELD CONDITIONS A. Utility Locator Service: Notify utility locator service for area where Project is located before beginning earth-moving operations. B. Do not commence earth moving operations until tree and plant protection measures specified in Section 015639 "Temporary Tree and Plant Protection" are in place. PART 2 - PRODUCTS 2.01 SOIL MATERIALS A. General: Provide borrow soil materials when sufficient satisfactory soil materials are not available from excavations. B. Satisfactory Soils: Soil Classification Groups SC or SM according to ASTM D 2487, or a combination of these groups; free of rock or gravel larger than 2 inches in any dimension, debris, waste, frozen materials, vegetation, and other deleterious matter. IFB #24-33-SD Earth Moving Route 1 Sewer Replacement Section No. 31 20 00 C. Unsatisfactory Soils: Soil Classification Groups GC, SC, CL, ML, OL, CH, MH, OH, and PT according to ASTM D 2487, or a combination of these groups. 1. Unsatisfactory soils also include satisfactory soils not maintained within 2 percent of optimum moisture content at time of compaction. D. Subbase Material: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 2940/D 2940M; with at least 90 percent passing a 1-1/2-inch (37.5-mm) sieve and not more than 12 percent passing a No. 200 (0.075-mm) sieve. E. Base Course: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 294/D 2940M 0; with at least 95 percent passing a 1-1/2-inch (37.5-mm) sieve and not more than 8 percent passing a No. 200 (0.075-mm) sieve. F. Engineered Fill: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 2940/D 2940M; with at least 90 percent passing a 1-1/2-inch (37.5-mm) sieve and not more than 12 percent passing a No. 200 (0.075-mm) sieve. G. Bedding Course: Naturally or artificially graded mixture of natural or crushed gravel, crushed stone, and natural or crushed sand; ASTM D 2940/D 2940M; except with 100 percent passing a 1-inch (25-mm) sieve and not more than 8 percent passing a No. 200 (0.075-mm) sieve. 2.02 ACCESSORIES A. Warning Tape: Acid and alkali resistant, polyethylene film warning tape manufactured for marking and identifying underground utilities, 6 inches (150 mm) wide and 4 mils (0.1 mm) thick, continuously inscribed with a description of the utility; colored to comply with local practice or requirements of authorities having jurisdiction. B. Detectable Warning Tape: Acid and alkali resistant, polyethylene film warning tape manufactured for marking and identifying underground utilities, a minimum of 6 inches (150 mm) wide and 4 mils (0.1 mm) thick, continuously inscribed with a description of the utility, with metallic core encased in a protective jacket for corrosion protection, detectable by metal detector when tape is buried up to 30 inches (750 mm) deep; colored to comply with local practice or requirements of authorities having jurisdiction. IFB #24-33-SD Earth Moving Route 1 Sewer Replacement Section No. 31 20 00 PART 3 - EXECUTION 3.01 PREPARATION A. Protect structures, utilities, sidewalks, pavements, and other facilities from damage caused by settlement, lateral movement, undermining, washout, and other hazards created by earth moving operations. B. Protect and maintain erosion and sediment controls during earth moving operations. C. Protect subgrades and foundation soils from freezing temperatures and frost. Remove temporary protection before placing subsequent materials. 3.02 EXCAVATION, GENERAL A. Unclassified Excavation: Excavate to subgrade elevations regardless of the character of surface and subsurface conditions encountered. Unclassified excavated materials may include rock, soil materials, and obstructions. No changes in the Contract Sum or the Contract Time will be authorized for rock excavation or removal of obstructions. 1. If excavated materials intended for fill and backfill include unsatisfactory soil materials and rock, replace with satisfactory soil materials. B. Excavations at Edges of Tree- and Plant-Protection Zones: 1. Excavate by hand or with an air spade to indicated lines, cross sections, elevations, and subgrades. If excavating by hand, use narrow-tine spading forks to comb soil and expose roots. Do not break, tear, or chop exposed roots. Do not use mechanical equipment that rips, tears, or pulls roots. 3.03 EXCAVATION FOR WALKS AND PAVEMENTS A. Excavate surfaces under walks and pavements to indicated lines, cross sections, elevations, and subgrades. 3.04 EXCAVATION FOR STRUCTURES A. Excavate to indicated elevations and dimensions within a tolerance of plus or minus 1 inch (25 mm). If applicable, extend excavations a sufficient distance from structures for placing and removing concrete formwork, for installing services and other construction, and for inspections. 1. Excavations for Footings and Foundations: Do not disturb bottom of excavation. Excavate by hand to final grade just before placing concrete reinforcement. Trim bottoms to required lines and grades to leave solid base to receive other work. IFB #24-33-SD Earth Moving Route 1 Sewer Replacement Section No. 31 20 00 2. Pile Foundations: Stop excavations 6 to 12 inches (150 to 300 mm) above bottom of pile cap before piles are placed. After piles have been driven, remove loose and displaced material. Excavate to final grade, leaving solid base to receive concrete pile caps. 3. Excavation for Underground Tanks, Basins, and Mechanical or Electrical Utility Structures: Excavate to elevations and dimensions indicated within a tolerance of plus or minus 1 inch (25 mm). Do not disturb bottom of excavations intended as bearing surfaces. B. Excavations at Edges of Tree and Plant Protection Zones: 1. Excavate by hand or with an air spade to indicated lines, cross sections, elevations, and subgrades. If excavating by hand, use narrow-tine spading forks to comb soil and expose roots. Do not break, tear, or chop exposed roots. Do not use mechanical equipment that rips, tears, or pulls roots. 2. Cut and protect roots according to requirements in Section 015639 "Temporary Tree and Plant Protection." 3.05 EXCAVATION FOR UTILITY TRENCHES A. Excavate trenches to indicated gradients, lines, depths, and elevations. B. Excavate trenches to uniform widths to provide the following clearance on each side of pipe or conduit. Excavate trench walls vertically from trench bottom to 12 inches (300 mm) higher than top of pipe or conduit unless otherwise indicated. 1. Clearance: 12 inches (300 mm) each side of pipe or conduit or per County standards. C. Trench Bottoms: Excavate and shape trench bottoms to provide uniform bearing and support of pipes and conduit. Shape subgrade to provide continuous support for bells, joints, and barrels of pipes and for joints, fittings, and bodies of conduits. Remove projecting stones and sharp objects along trench subgrade. 1. Excavate trenches 6 inches (150 mm) deeper than elevation required in rock or other unyielding bearing material to allow for bedding course. D. Trenches in Tree and Plant Protection Zones: 1. Hand excavate to indicated lines, cross sections, elevations, and subgrades. Use narrow tine spading forks to comb soil and expose roots. Do not break, tear, or chop exposed roots. Do not use mechanical equipment that rips, tears, or pulls roots. 2. Do not cut main lateral roots or taproots; cut only smaller roots that interfere with installation of utilities. IFB #24-33-SD Earth Moving Route 1 Sewer Replacement Section No. 31 20 00 3.06 STORAGE OF SOIL MATERIALS A. Stockpile borrow soil materials and excavated satisfactory soil materials without intermixing. Place, grade, and shape stockpiles to drain surface water. Cover to prevent windblown dust. 1. Stockpile soil materials away from edge of excavations. Do not store within drip line of remaining trees. 3.07 UTILITY TRENCH BACKFILL A. Place backfill on subgrades free of mud, frost, snow, or ice. B. Place and compact bedding course on trench bottoms and where indicated. Shape bedding course to provide continuous support for bells, joints, and barrels of pipes and for joints, fittings, and bodies of conduits. C. Initial Backfill: Place and compact initial backfill of satisfactory soil, free of particles larger than 2 inches in any dimension, to a height of 12 inches over the pipe or conduit. 1. Carefully compact initial backfill under pipe haunches and compact evenly up on both sides and along the full length of piping or conduit to avoid damage or displacement of piping or conduit. Coordinate backfilling with utilities testing. D. Final Backfill: Place and compact final backfill of satisfactory soil to final subgrade elevation. E. Warning Tape: Install warning tape directly above utilities, 12 inches (300 mm) below finished grade, except 6 inches (150 mm) below subgrade under pavements and slabs. 3.08 SOIL FILL A. Plow, scarify, bench, or break up sloped surfaces steeper than 1 vertical to 4 horizontal so fill material will bond with existing material. B. Place and compact fill material in layers to required elevations as follows: 1. Under grass and planted areas, use satisfactory soil material. 2. Under walks and pavements, use satisfactory soil material. 3. Under steps and ramps, use engineered fill. 4. Under building slabs, use engineered fill. 5. Under footings and foundations, use engineered fill.